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Message-ID: <1507496943.2677.95.camel@decadent.org.uk>
Subject: Re: Request security fix in -stable (upstream 2c33645d366d)
From: Ben Hutchings <ben@decadent.org.uk>
To: Kevin Christopher <kevinc@vmware.com>, stable@vger.kernel.org
Date: Sun, 08 Oct 2017 22:09:03 +0100
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On Wed, 2016-07-06 at 15:13 -0700, Kevin Christopher wrote:
> Stable maintainers -
>=20
> Have a request to merge an upstream security fix into stable branches.=
=20
> The change avoids a userlevel-induceable kernel #GP in perf/x86 when a=
=20
> hypervisor emulates older perfmon. The issue was originally seen and=20
> accepted as an upstream patch proposed by Amazon in 2015; the security=
=20
> implication when on a VMware hypervisor was recently reported.
>=20
> Upstream commit:
> (commit) 2c33645d366d13b969d936b68b9f4875b1fdddea
> (subject) perf/x86: Honor the architectural performance monitoring versio=
n
>=20
> A second commit fixes a trivial build issue introduced by the above commi=
t:
> (commit) 6d6f2833bfbf296101f9f085e10488aef2601ba5
> (subject) perf/x86: Fix undefined shift on 32-bit kernels
[...]

Belatedly queued these up for 3.16.

Ben.

--=20
Ben Hutchings
compatible: Gracefully accepts erroneous data from any source


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